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Electrodeposition of nickel in the presence of Al3+ from sulfate baths

Mohanty, U.S., Tripathy, B.C., Singh, P., Das, S.C. and Misra, V.N. (2005) Electrodeposition of nickel in the presence of Al3+ from sulfate baths. Journal of Applied Electrochemistry, 35 (6). pp. 545-549.

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The effect of Al3+ on the cathodic current efficiency deposit morphology crystallographic orientations and polarisation behaviour of the cathode during electrodeposition of nickel from acidic sulfate solutions was investigated. Higher concentration of Al3+ (>10 mg dm -3) significantly deteriorated the surface quality of the nickel deposit as well as the current efficiency. X-ray diffraction studies revealed that the (200) plane was the most preferred crystal plane and was not affected by the presence of varying concentration of Al3+ in the electrolytic bath. The presence of Al3+ caused polarisation of the cathode which increased with increasing Al3+ concentration. The effect of Al 3+ on the electrokinetic parameters: Tafel slope (b) transfer coefficient (α) and exchange current density (i 0) were also investigated.

Item Type: Journal Article
Murdoch Affiliation(s): School of Chemical and Mathematical Science
Publisher: Kluwer Academic Publishers
Copyright: © Springer 2005.
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